Someone who obviously has no faith in the "Canadien" postal system
recently wrote:

The Q-Man asks:
            This is about those nice people who bring you those nice
little boxes of shells that you just can't wait to open. (See! It's
shell related.)
        "Neither rain, nor snow, nor sleet, nor---etc.---"
        Q: who authored that well-known quotation?  (Canadiens need not
reply)
                Q-Man

Since i am in fact a Canadian and have no idea where Canadiens dwell
(ok, they are a hockey team, i think....), i will answer this
tangentially shell-related queery:

As a Matter of Fact

          (Facts about wise old sayings and their authors)

          Many of us have heard the postal carriers' motto in one form
or another. One popular version is "Neither rain, nor snow, nor sleet,
nor hail shall keep the postmen from their appointed rounds". The
original saying was actually "Neither snow, nor rain, nor heat, nor
gloom of night stays these courageous couriers from the swift completion
of their appointed rounds" and was said about 2500 years ago by the
Greek historian, Herodotus. He said this adage during the war between
the Greeks and Persians about 500 B.C. in reference to the Persian
mounted postal couriers whom he observed and held in high esteem.

          Today many people believe this saying to be the U.S. Postal
Service (U.S.P.S.) motto, but, in fact, is not their official slogan.
According to the U.S.P.S. they have no slogan at all. The reason it has
become identified with the U.S.P.S. is because back in 1896-97 when the
New York City General Post Office was being designed, Mitchell Kendal,
an employee for the architectural firm McKim, Mead and White, came up
with the idea of engraving Herodotus' saying all around the outside of
the building. From that time on the saying has been associated with U.S.
  postal carriers.

          (Source: Bob Cannon, Public Affairs and Communications Officer
for the U.S. Postal           Service in Boston, MA.)

From your friendly neighbourhood non-Canadien shell dealer;
-Ross.
--
Ross Mayhew: Schooner Specimen Shells:
Http://www.schnr-specimen-shells.com
"We Specialize in the Unusual"
Phone: (902) 876-2241; Fax: (902) - 479 - 1863
But try to find "something for Everyone"!!
Snail Mail: 349 Herring Cove Rd, P.O Box 20005, Halifax, N.S., Canada,
B3R 2K9.